Johan JASON, Marc WUILPART, Kıvılcım YÜKSEL

We present in this work, the experimental demonstration of a phase-sensitive Optical Time- Domain Reflectometer (phase-OTDR) having coherent detection scheme. An analysis algorithm has also been developed to calculate amplitude and phase evolution of the experimental phase-OTDR traces. The efficienc

Bu çalışmada, evre uyumlu algılayıcıya sahip bir faza duyarlı frekans bölgesinde optik yansıtıcı (faz- OTDR) ünitesi deneysel olarak gerçeklenmiştir. Faz-OTDR izlerine ait genlik ve faz cevaplarının hesaplanmasını sağlayan analiz algoritmaları geliştirilmiştir. Sözkonusu algoritmaların fiber üzerine tek veya aynı anda iki noktada titreşim uygulandığında, titreşim konum ve frekansını tespit kabiliyeti deneysel olarak gösterilmiştir. Yavaş-zaman analizleri ile elde edilen sonuçlar, makalede tartışılan matematiksel ispat ile uyumlu sonuç vermiştir. Makalede ele alınan sensör sorgulama ünitesi, dağıtık titreşim algılayıcılar kullanılarak trenyolu izleme sistemleri tasarımı gibi pek çok teknolojik alanda etki yaratma potansiyeli taşımaktadır.

DEVELOPMENT OF A PHASE-OTDR INTERROGATOR BASED ON COHERENT DETECTION SCHEME

We present in this work, the experimental demonstration of a phase-sensitive Optical Time-Domain Reflectometer (phase-OTDR) having coherent detection scheme. An analysis algorithm has alsobeen developed to calculate amplitude and phase evolution of the experimental phase-OTDR traces. Theefficiency of the analysis algorithm to determine the position of the applied vibration has been verified fora single and two simultaneous vibrations. The slow-time analysis results show a good agreement with themathematical calculations discussed in the paper. This work could have a technological implication inmany fields such as distributed vibration sensor for railway monitoring applications.

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